Truck for railway-cars



(No Model.)

L. PFINGST '& S. A, BEMIS. TRUCK FOR RAILWAY ems.

No. 472,271. Patent.edApr.'5, 1892. v

5 a -WJ0EL9I/40 51/72 a mgj q n o z; w Z O O f UNrrE STATES LOUIS PF INGST, OF BOSTON, AND SUMNER A. BEMIS, OF SPRINGFIELD, MASSACHUSETTS.

TRUCK F OR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 472,271, dated April 5,1892. 7

Application filed November 28, 1891. Serial No. 413.437- (No model.)

To aZZ whom, it may concern: 7

Be it known that we, LOUIS PFINGST, residing at Boston, in the county ofSuffolk, and SUMNER A. BEMIS, residing at Springfield, in the county ofHampden, and State of Massachusetts, both citizens of the United States,have invented new and useful Improvements in Trucks for Railway-Oars, ofwhich the following is a specification.

- This invention relates to improvements in trucks for railway-cars, thesame being especially designed for street-railway, electric, and cablecars; and the object is to improve the I construction of the truck,whereby the carbody may be more readily placed upon and in the properconnection with the truck or re moved therefrom for the substitution onthe truck of another car-body, or for other purpose.

The invention essentiallyem bodies the combination, with the beam orsill of the car-body, of a sill-bearing plate, one of said parts havinga socket and the other a boss or projection to fit the socket, and thesaid sill-bearing plate being horizontally spring-supported by and abovethe truck.

The nature and composition of the invention will be rendered entirelyclear on reference to the accompanying drawings, in which Figure 1 is aside elevation and partial section of a part of the truck, showing thesill of the car-body supported thereon and the novel devices of thisinvention applied between the truck and sill. Fig. 2 is a side view of apart of the sill with the pending cup-shaped projections thereon,andFig. 3 is a cross-sectional view of the sill and its pending projectionand of the spring-supported sill-bearing plate. Fig. 4 is a perspectiveView of a modification to be hereinafter referred to.

The sill-bearing plate A is a fixture of the truck, having only aremovable engagement with the sill O of the car-body instead of apermanent engagement therewith, as heretofore has been common.

The sill-bearing plate consists of a longitudinally-extended narrowhorizontal casting adapted by its upper side to lie along and under thesill; but it is provided with the sockets a ck, extended downwardly fromits upper side, the said sockets being surrounded by a circular wall,which is projected below the under face of the bearing-plate, and eachof the said socket-forming walls at its lower portion has the horizontalbearing web or wall b, and the circular surrounding flange dextendedtherebelow. Said portions 1) d form inverted cups for the reception ofthe upper ends of the vertically-mounted spiral springs f, which aresupported attheir bottoms upon the forward and rearward extensions ofthe yoke A, which form part of the truck-frame.

The construction and design of the truck of which this sill-bearingplate now constitutes a part is illustrated and described in LettersPatent of the United States, granted to us March 31, 1891, No. 449,382,and therefore only incidental mention will be further made of the truck.

9 g represent inverted-cup-shaped bosses or projections, which are fixedon the under side of the sill of the car-body, each comprising the upperwall or web 10 and the hanging circular Wall open at its lower edge.These cup-shaped projections are secured to the sill by the bolts 12,the heads of which overlie the said web or Wall lO-adjacent the holetherein and through which the shank of the bolt passes, and the boltsreceive the confining-nuts 13 on the extremities which are projectedthrough the sill. The said cupshaped projections are arranged on thesill at suitable positions to fit into the sockets a a and theprojections g, and socket-walls are drilled transversely for thereception of the bolt or locking-pin on. By preference the projections gg slightly taper downwardly, the sockets being correspondingly formed toreceive same with a comparatively close fit.

The sill-bearin g plates are provided at suitable points in their lengthwith the downwardly-extended bosses n n, vertically bored and socketedthereabove, the said sockets 0 being formed below the upper face of theplate. The upper ends of the vertical posts or rods Z l are passedthrough said bored bosses, as in the truck described in theaforementioned patent, and are held by nuts 14, which are seated in saidsockets. These rods extend downwardly wit-h aloose bearin g throughsuitable holes therefor in the truck-frame and axle-box steps (not hereshown) and receive the connection therewith of the horizontal tie andbrace 13 at their lower ends, said tie-brace acting as a limit to theupward movement of the sill-bearin g plate, especially when the car-bodyis only lightly loaded or is removed from the truck. The sill-bearingplate at its extremity is also formed with a depression or socket q,sunk belowits upper face for the reception of the head of the bolt r,which connects the tie bar or rod tthat is understood as connected toand transversely extended from the sill-plate at one side of the car tothat at the other.

It will be seen from the foregoing that the sill has merely the downwardprojections g g, requiring a single bolt for the connection therewith ofeach, and that the sill-plate, while adapted for the connectiontherewith of the several parts for adapting or rendering the sill-plateas a part of the truck, presents a flush upper surface for bearing uponthe under side of the car-sill. The removal of the car-body merelyrequires the withdrawal of the bolts m and the lifting of the body fromthe sill-bearing plate. The sill has along its length beyond thesill-bearing plate a hanger u, and the yoke or truck-frame has securedupon its outerend and extended longitudinally therefrom a plate orleaf-spring 'v, the outer end of which has a connection with the lowerextremity of the hanger. The form of spring here shown, as in saidconnection, is what is known as a quarter-elliptic spring, and is heldin place at its inner end by the clamping-block to, which is bolted ontothe truck-frame, the spring extending outwardly with an upward curvefrom said place of connection with the truck-frame, and is subject tocompression and reaction upon the application of a downward stressthereupon. The lower end of the hanger is inwardly turned and one end ofa short link x is secured thereto by a pivot-bolt, the other end of thelink being connected by another pivot-bolt to the outer end of thequarterelliptic spring. The spring has sufficient stiffness to check thefore-and-aft rocking or tilting movement of the car-body upon the truckwhen the car is but lightly loaded, the said spring not interfering withthe springing motions of the car, which are regarded as desirable.

In Fig. 4 the spring is shown as having substantially the sameapplication on and extension from the truck as seen in Fig. 1, but itsouter end being somewhat further upwardly extended, however, and in lieuof being linked to the hanger has a free sliding bearing upon thewear-plate, which is bolted upon the under side of the car-sill. Thesaid plate preferably has the separated longitudinal ribs, between whichthe extremity of the spring bears, and by which the spring is heldagainst distortion.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is l 1. The combination, with a beam or sill of thecar-body, of a sill-bearing plate, one of said parts having a socket andthe other a boss or projection to fit the socket, the said sill-bearingplate being horizontally springsupported by and above the truck,substantially as described.

2. The combination, with a beam or sill of the car-body, of asill-bearing plate, one of said parts having a socket and the other aboss or projection to fit the socket, and a bolt passed transverselythrough the walls of said socket and through the said boss, the saidsill-bearing plate being supported by and above the truck and connectedthereto, substantially as described.

3. The combination, with the sill of the carbody, having projectionsdownwardly extended from its under side, which consist ofinverted-cup-formed castings, with bolts engaging and passed upwardlythrough their top walls and through the sill, of a sill-bearing platesupported on the truck and having the socketed bosses extending belowits thickness and having the sockets which are therein open to the upperside of the said plate, substantially as described.

4. The combination, with the sill of the carbody, having thedownwardly-extended projections, of the truck-frame having the verticalsupporting-springs, and the sill-bearing plate having the socketedbosses extending below its thickness and having the sockets which aretherein open to the upper side of said plate and said bosses having attheir lower portions the seats for said springs, substantially asdescribed.

5. The combination,with the car-body having the downwardly-extendedprojections, of the truck and the sill-bearing plate springsupportedabove the truck and having sockets for the reception of said pendingsill projections, and said plate also provided with the socket q, sunkwithin its upper side, and the transverse tie-bar t and the bolt thatunites the same with the sill-plate, having its head set in said socketq, substantially as described.

6. The combination,with the sills of thecarbody,havingthedownwardly-extendedbosses, of sill-bearing platesspring-supported above the truck and having the sockets for thereception of the said bosses, and a cross-tie bar for uniting thesill-bearing plates at the opposite sides of the truck, substantially asdescribed.

LOUIS PFINGST. SUMNER A. BEMIS. Vitnesses to signature of Louis Pfingst:

O. M. SHAW, IRVING H. FAY. lVitnesses to signature of SumncrA. Bemis:

WM. S. BELLows, H. A. CHAPIN.

